How to Thread a Brother LS2125i Sewing Machine: A Step-by-Step Guide

Hey there, fellow sewing enthusiasts! Are you ready to dive into the world of sewing but feeling a bit overwhelmed by the thought of threading your Brother LS2125i sewing machine?

Fear not! In this comprehensive guide, we’ll unravel the mystery of threading step by step, so you can confidently tackle any sewing project with ease.


Whether you’re a newbie to sewing or just need a refresher, this guide has got you covered. So, let’s thread our way to sewing success together!

Getting Started

Before we begin threading the machine, let’s gather all the necessary supplies:

  • Brother LS2125i sewing machine
  • Spool of thread
  • Bobbin
  • Threader (optional but recommended)
  • Scissors

Once you have everything you need, find a comfortable and well-lit workspace to start threading your machine.

Threading the Brother LS2125i Sewing Machine

Step 1: Prepare Your Machine

Step 2: Wind the Bobbin

Step 3: Insert the Bobbin

Step 4: Thread the Needle

Step 5: Bring Up the Bobbin Thread

Threading the Brother LS2125i Sewing Machine

Step 1: Prepare Your Machine

Turn off and Unplug: The first step in any sewing machine maintenance or setup is to ensure it’s safely powered off and unplugged from any electrical sources. This minimizes the risk of accidents while you work.

Raise the Presser Foot: The presser foot is the mechanism that holds your fabric in place while sewing. Located behind the needle, there’s a lever you can use to raise or lower it. By raising the presser foot, you provide space to access the threading areas without any obstructions.

Raise the Needle to Its Highest Position: The needle position is crucial for threading as it ensures that the thread passes through the right components smoothly. Turn the handwheel towards you to raise the needle to its highest position. This action prevents any interference between the thread and the moving parts of the machine during threading.

Step 2: Wind the Bobbin

How to Thread a Brother LS2125i Sewing Machine-Wind the Bobbin

Prepare the Spool of Thread: Now, let’s focus on winding the bobbin, which is essential for supplying the lower thread during sewing. Start by placing your chosen spool of thread on the designated spool pin. This pin is typically located on the top of your machine. Secure the spool in place with the spool cap to prevent it from slipping off during winding.

Prepare the Bobbin: Take an empty bobbin and place it onto the bobbin winding spindle. This spindle is usually positioned on the top right-hand side of your machine. Ensure the bobbin fits snugly onto the spindle.

Engage the Winding Mechanism: Move the bobbin to the right to engage the winding mechanism. This action sets the machine in bobbin winding mode, where it will wind the thread onto the bobbin.

Secure the Thread: Hold the end of the thread firmly in your hand. This prevents it from slipping or becoming tangled during the winding process.

Start Winding: Begin winding the bobbin manually by guiding the thread around it a few times to secure the starting end. Once the thread is secured, press the foot pedal to start the winding process. Keep an eye on the bobbin as it fills, ensuring the thread winds evenly across the entire surface.

Finish and Remove the Bobbin: Once the bobbin is adequately filled, stop the machine and cut the thread. Remove the bobbin from the winding spindle, and you’re ready to move on to threading the machine.

Step 3: Insert the Bobbin

How to Thread a Brother LS2125i Sewing Machine-Insert the Bobbin

Place the Filled Bobbin: Take the filled bobbin and place it into the bobbin case. Ensure that the thread is coming off the bobbin in a clockwise direction. This direction is crucial for the proper functioning of the sewing machine.

Guide the Thread through the Tension Spring: Once the bobbin is in place, guide the thread through the tension spring located within the bobbin case. This spring helps regulate the tension of the lower thread during sewing, ensuring even and balanced stitches.

Thread into the Slot: After passing through the tension spring, guide the thread into the slot within the bobbin case. This slot holds the thread securely in place and ensures it feeds properly during sewing.

Pull the Thread Towards the Left: Once the thread is in the slot, pull it towards the left and under the tension spring. Leave a few inches of thread hanging to ensure there’s enough thread to begin sewing without running out too quickly.

Step 4: Thread the Needle

How to Thread a Brother LS2125i Sewing Machine-Thread the Needle

Raise the Needle: Using the handwheel, raise the needle to its highest position. This step is crucial for threading as it provides ample space to maneuver the thread through the machine’s various components.

Guide the Thread through the Thread Guide: Hold the thread with your left hand and use your right hand to guide it through the thread guide located at the top of the machine. This guide helps keep the thread in place and prevents it from tangling during sewing.

Thread through the Tension Discs: Continue guiding the thread down through the tension discs. These discs control the tension of the upper thread, ensuring it feeds smoothly through the machine and creates even stitches.

Thread the Needle: Once the thread has passed through the tension discs, thread it through the eye of the needle from front to back. Ensure the thread passes through the needle’s eye smoothly without any resistance.

Step 5: Bring Up the Bobbin Thread

Hold the Upper Thread: With your left hand, hold onto the upper thread securely to prevent it from slipping out of place.

Turn the Handwheel: Use your right hand to turn the handwheel towards you. Lower the needle into the bobbin area and then raise it again. This action will catch the bobbin thread and bring it up through the needle plate.

Pull Both Threads Towards the Back: Once the bobbin thread is brought up, use a pair of scissors or your fingers to pull both the upper and bobbin threads towards the back of the machine. Ensure that there’s enough slack in both threads to start sewing without any tension issues.

Read More: Brother LS2125i Sewing Machine Manual pdf

Our Take: What should consider when threading Brother LS2125i Sewing Machine

When threading your Brother LS2125i Sewing Machine, there are several important considerations to keep in mind to ensure smooth and trouble-free sewing:

  • Correct Thread Tension: Proper thread tension is crucial for achieving balanced and even stitches. Make sure to follow the machine’s manual instructions for adjusting the tension settings based on the type of fabric and thread you’re using.
  • Thread Quality and Type: Use high-quality thread suitable for your sewing project. Different fabrics may require different types of thread, so choose accordingly. Ensure the thread is compatible with the needle size and sewing machine specifications.
  • Needle Position: Always raise the needle to its highest position before threading the machine. This prevents the needle from interfering with the threading process and ensures proper alignment.
  • Thread Path: Follow the correct thread path as outlined in the machine’s manual. Ensure the thread passes through all necessary guides, tension discs, and the needle’s eye in the correct order. Any deviation from the proper path can lead to stitching problems.
  • Bobbin Winding: Wind the bobbin evenly and ensure it’s inserted correctly into the bobbin case with the thread unwinding in the correct direction. Improperly wound or inserted bobbins can cause thread tension issues and stitching problems.
  • Bobbin Tension: Check the tension of the bobbin thread by pulling it gently. The bobbin thread tension should be balanced with the upper thread tension for optimal stitching results.
  • Cleanliness and Maintenance: Keep your sewing machine clean and well-maintained to prevent lint buildup and ensure smooth operation. Regularly clean the bobbin case, feed dogs, and needle area, and oil the machine as recommended in the manual.
  • Practice and Patience: Threading a sewing machine can be tricky, especially for beginners. Take your time and practice threading until you feel comfortable and confident. Don’t hesitate to refer to the machine’s manual or seek help from experienced sewers if needed.
By considering these factors and following proper threading procedures, you can ensure that your Brother LS2125i Sewing Machine operates smoothly and produces beautiful stitches for all your sewing projects.

Conclusion: You’re Ready to Sew!

Congratulations! You’ve successfully threaded your Brother LS 2125i sewing machine. Now you’re ready to unleash your creativity and start sewing your next masterpiece. Remember to refer back to this guide whenever you need a refresher on threading your machine.


Q: Do I need to use a threader to thread the needle? A: While a threader can be helpful, especially for those with poor eyesight or shaky hands, it’s not necessary. With practice, you can thread the needle manually.

Q: How do I know if I’ve threaded the machine correctly? A: After threading the machine, perform a test stitch on a scrap piece of fabric. If the stitches look even and the thread tension is correct, then you’ve threaded the machine correctly.

Q: Can I use any type of thread with the Brother LS2125i sewing machine? A: Yes, you can use a variety of threads with this machine, including cotton, polyester, and silk. Just make sure the thread is compatible with your sewing project.

Q: What should I do if the thread keeps breaking while I’m sewing? A: Check the tension settings on your machine and make sure the thread is properly threaded through the tension discs. Additionally, try using a new needle and adjusting the thread tension if necessary.

Q: How often should I clean and oil my sewing machine? A: It’s recommended to clean and oil your sewing machine after every 8-10 hours of use to keep it running smoothly. Be sure to refer to your machine’s manual for specific cleaning and maintenance instructions.